| Purpose | Patients | Evaluations | Perceived Effectiveness |
|---|---|---|---|
| Pain | 21 | 7 | |
| Fibromyalgia | 9 | 1 | |
| Pain in lower back | 6 | 2 | |
| Back pain | 4 | 1 | |
| Degenerative disc disease | 3 | 3 |
Common side effects
| Side effect | Patients | Percentage |
|---|---|---|
| Constipation | 7 | |
| Excessive daytime sleepiness (somnolence) | 2 | |
| Nausea | 2 | |
| Chronic constipation | 1 | |
| Decreased sex drive (libido) | 1 | |
| Diarrhea | 1 |
Side effect severity
| Severity | Evaluations | Percentage |
|---|---|---|
| Severe | 4 | |
| Moderate | 7 | |
| Mild | 2 | |
| None | 2 |